CD54AC161 Datasheet, PDF (4/15 Pages) Texas Instruments – 4-BIT SYNCHRONOUS BINARY COUNTERS

CD54AC161, CD74AC161
4-BIT SYNCHRONOUS BINARY COUNTERS
SCHS239C – SEPTEMBER 1998 – REVISED MARCH 2003
logic symbol, each D/T flip-flop
LD (Load)
TE (Toggle Enable)
CK (Clock)
D (Inverted Data)
R (Inverted Reset)
M1
G2
1, 2T/1C3
G4
3D
4R
logic diagram, each D/T flip-flop (positive logic)
CK
LD
TE
LD^†
TG
LD^†
TG
D
TG
CK^†
TG
CK^†
R
† _{The origins of LD and CK are shown in the logic diagram of the overall device.}
Q (Output)
TG
Q
CK^†
TG
CK^†
4
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